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Projects

Development of a Coupled Hydrodynamic-Biogeochemic...

Harmful Algal Blooms (HABs) in the Chesapeake Bay, which threaten human and ecosystem health, are more frequent and severe than decades ago. We are developing a new model that incorporates ...

Differences in the Toxicity of the Alga Gambierdis...

The goal of this project is to advance our understanding of toxins produced by different species of the alga Gambierdiscus and how these toxins and their varieties move through the ...

DinoSHIELD: A Slow-release Natural Algicide Produc...

We will field test an environmentally neutral method to control harmful algal blooms. Our work will provide managers with information on the applications of a natural algicide as an environmentally ...

Do Harmful Algal Bloom Migrations Across Carbonate...

This project will evaluate whether harmful algal bloom (HAB) species may have a competitive advantage over other phytoplankton in response to coastal acidification and climate changes occurring in northeast US ...

Early Warning for Amnesic Shellfish Poisoning in t...

This project will help mitigate HAB-related disruptions to highly productive Gulf of Maine shellfisheries with new knowledge, observing technology advances, and enhanced capacity to deliver early warnings and forecasts of ...

ECOHAB: GOMTOX: Dynamics of Alexandrium fundyense ...

Extensive shellfish resources in the Gulf of Maine are frequently contaminated with toxins produced by the red tide dinoflagellate Alexandrium fundyense. Shellfish harvesting must be closed to protect public health ...

Ecophysiology and Toxicity of the Toxic Alga Heter...

We are identifying toxins and environmental factors causing fish-killing blooms by the alga Heterosigma akashiwo in Puget Sound. We develop tools to improve monitoring, early warning, and mitigation to prevent ...

Effects and Discovery of Chronic Domoic Acid Expos...

Domoic acid, a naturally occurring marine neurotoxin, threatens the health of marine mammals, seabirds, and humans via severe and long-term yet low-level exposure through the food web. Researchers discovered a ...

Emerging Algal Toxins in the California Current Sy...

Surveys in California have highlighted the occurrence of HAB toxins in estuarine waters and shellfish, but there is concern that current monitoring approaches under-report the threats. There is a need ...

Employing a Novel Molecular Toolbox for Rapid, Sen...

The diatom Pseudo-nitzschia produces the neurotoxin domoic acid, which can impact both humans and marine wildlife when consumed. This project seeks to build and implement a diverse molecular toolbox to ...

News

NOAA Predicts a Moderate Harmful Algal Bloom for L...

Caption: Blooms with a severity index above 5 generally pose greater risk to drinking water and recreation in Lake Erie, but the impact of a bloom also depends on its ...

2023 Gulf of Maine Red Tide Predicted to be Low

Researchers with NOAA’s National Centers for Coastal Ocean Science (NCCOS) are expecting another low to moderate red tide for the Gulf of Maine this spring and summer, continuing the pattern ...

Harmful Algal Bloom Workshop Focuses on Alaskan Co...

Attendees at the 2023 Alaska HAB Workshop. Climatic changes in Arctic Alaska are resulting in more harmful algal blooms (HABs) for the region, signaling a potential growing threat to human ...

NCCOS Contributes to 2023 Annual meeting of the Na...

Dr. Suzanne Bricker (l) and Ms. Shelly Tomlinson (r) with Dr. Sandy Shumway, President-elect National Shellfish Association and Conference Manager, at the 115th Annual meeting of the National Shellfish Association ...

Publication Provides Guidance on Implementing Earl...

An international team of researchers and managers that includes NCCOS scientists published technical guidance to help improve harmful algal bloom (HAB) monitoring and forecasting around the globe. The document provides ...

Study Estimates Economic Impacts of Harmful Algal ...

Razor clamming on Washington coast, October 20, 2021. Credit: Washington Department of Fish and Wildlife. A new study from NCCOS-funded researchers estimates a range of economic impacts that result from ...

Pacific Northwest Tribes Participate in NCCOS-host...

Tribal members collecting phytoplankton. Credit: NOAA. NCCOS scientists hosted a phytoplankton and toxin monitoring workshop for Tribal environmental specialists from the First Nations Health Authority, part of the WATCH Community ...

2022 Lake Erie Algal Bloom More Severe than Predic...

Bloom severity index (SI) for 2002-2022. The SI is based on the amount of biomass over the peak 30-days. The 2022 bloom had a severity of 6.8. October marked the ...

Annual Harmful Algal Cyst Sampling Cruise Complete...

Seed-like cysts of the harmful alga Alexandrium catenella. Credit: Tyler Harman, Mark Vandersea, NOAA NCCOS. Scientists from NCCOS and Woods Hole Oceanographic Institution embarked on a seven-day sediment sampling mission ...

11th U.S. Harmful Algal Bloom Symposium Highlights...

The 11th U.S. Symposium on Harmful Algae highlighted advances in research and development of scientifically sound solutions to aid communities across the country in responding to the increasing impacts from harmful ...

Products

Maps, Tools & Applications

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Data & Publications

Effects of inorganic and organic nitrogen and phosphorus on the growth and toxicity of two Alexandrium species from Hong Kong

The effects of three nitrogen (N) and two phosphorus (P) inorganic and organic forms on the growth, toxin content and composition, toxin production, and chemical composition of Alexandrium catenella and Alexandrium tamarense isolated from coastal waters of Hong Kong were ...

Effects of temperature and salinity on the growth of Alexandrium (Dinophyceae) isolates from the Salish Sea

Toxin-producing blooms of dinoflagellates in the genus Alexandrium have plagued the inhabitants of the Salish Sea for centuries. Yet the environmental conditions that promote accelerated growth of this organism, a producer of paralytic shellfish toxins, is lacking. This study quantitatively ...

Environmental controls, oceanography and population dynamics of pathogens and harmful algal blooms: Connecting sources to human exposure

Coupled physical-biological models are capable of linking the complex interactions between environmental factors and physical hydrodynamics to simulate the growth, toxicity and transport of infectious pathogens and harmful algal blooms (HABs). Such simulations can be used to assess and predict ...

Environmental Monitors on Lobster Traps (eMOLT): long-term observations of New England's bottom-water temperatures

Nearly one hundred New England lobstermen have installed temperature sensors on their traps to record hourly values at fixed locations since 2001. These moorings are distributed primarily along the shelf edge in the northern Mid-Atlantic Bight and along the entire ...

Evaluation of Rapid, Early Warning Approaches to Track Shellfish Toxins Associated with Dinophysis and Alexandrium Blooms

Marine biotoxin-contaminated seafood has caused thousands of poisonings worldwide this century. Given these threats, there is an increasing need for improved technologies that can be easily integrated into coastal monitoring programs. This study evaluates approaches for monitoring toxins associated with ...

Factors regulating excystment of Alexandrium in Puget Sound, WA, USA

Factors regulating excystment of a toxic dinoflagellate in the genus Alexandrium were investigated in cysts from Puget Sound, Washington State, USA. Experiments were carried out in the laboratory using cysts collected from benthic seedbeds to determine if excystment is controlled ...

First report of an Ansanella granifera bloom associated with eutrophication in Cuban waters, Caribbean region

Harmful Algal Blooms (HABs) have been associated with fish and shellfish kills, ecosystem damage, human health impacts, and significant economic losses to the aquaculture and tourist industries throughout the world. The increase of HABs in recent years is generally related ...

Harmful Algae and Their Potential Impacts on Desalination Operations off Southern California

Seawater desalination by reverse osmosis (RO) is a reliable method for augmenting drinking water supplies. In recent years, the number and size of these water projects have increased dramatically. As freshwater resources become limited due to global climate change, rising ...

Harmful Algal Bloom Forecasting Branch Ocean Color Satellite Imagery Processing Guidelines

The Harmful Algal Bloom - Forecasting Branch (HAB-FB) is a research group within the National Oceanic and Atmospheric Administration (NOAA), National Centers for Coastal Ocean Science (NCCOS) tasked with forecasting and monitoring HABs. One of the more effective ways to ...

Harmful Algal Blooms along the North American West Coast Region: History, trends, causes, and impacts

Along the Pacific coast of North America, from Alaska to Mexico, harmful algal blooms (HABs) have caused losses to natural resources and coastal economies, and have resulted in human sicknesses and deaths for decades. Recent reports indicate a possible increase ...

General Pages

PCMHAB

NCCOS projects identify and evaluate a range of methods to prevent, control or mitigate blooms of harmful algae in ways that are safe for the environment.After more than 10 years ...

Phytoplankton Monitoring Network (PMN)

The National Phytoplankton Monitoring Network (PMN) is a community-based network of volunteers monitoring marine phytoplankton and harmful algal blooms (HABs). PMN recognizes the interrelationships between humans and coastal ecosystems while ...

Response and Readiness for HAB Events

Every year many coastal states experience HABs that produce dangerous levels of natural toxins. This forces public health officials to close valuable commercial and recreational shellfish harvests and warn people ...

Satellite Imagery

Current Lake Erie Sentinel-3 a and b Composited Satellite Imagery from the Ocean and Land Color Imager (OLCI) as of 2024-07-11 showing bloom location and extent. Image credit: The images ...

Tampa Bay

Harmful Algal Bloom Monitoring System: Southwest FloridaThis page shows algal blooms in Tampa Bay. Blooms of some different types of algae may be present. In lower Tampa Bay, Karenia brevis ...

Toxin Detection Technologies

NCCOS uses three detection strategies to accurately measure algal toxins despite the unique challenges. Our scientists develop biochemical methods largely for sensor applications. We develop and validate chemical methods notably ...
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NOAA Internship Opportunities

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